Bucksaw-frame.



No. e'zsa'wv Patented luly s, |900.

' L. E. EICKELBERG. l

A BUCKSW FRAM-E.` implication med nec. 11, 1999.)

@s1/vanto@ by means of the bolt l2.

' UNITED STAT-Es PATENT @Erica LOUIS E. EICKELBERG, OFWATERLOO, IOWA.

BUoKsAw-FRAM E.

SPECIFICATION forming part of Letters Patent N o. 652,838, dated July 3,1900. Application led December 11, 1899. Seriallo. 740,023. (No model.)

To a/ZZ whom t may concern:

Be it known that I, Louis E. EICKELBERG, a citizen of the United Statesof America, and a resident of Waterloo, Blackhawk county, State of Iowa,have invented certain new and useful Improvements in Bucksaw-Frames, ofwhich the following is a specification.

My invention relates to improvements in bucksaw-frames wherein tubularbeams are used and regulating devices for adjusting the saw-blades intoproper tension; and the object of my improvement is to provide astrengthened tubular frame, with a friction-clutch as a connectionbetween the beam and regulating-rod. I attain this object by the meansillustrated in the accompanying drawings, in which- Figure 1 is a sideelevation of my improved bucksaw-frame, having friction clutch attached.Fig. 2 is an enlarged sectional View of a portion of the beam,friction-clutch, and

regulating-rod. Fig. 3 is a view of the friction-clutch as seen from thehandle side of frame; and Fig. 4 is a vertical sectional view of theflattened portion of beam on the line Fig. 2.

Similar numerals refer to similar parts throughout the several views.

The tubular beam l is represented as being pivotally connected with thesaw-handle' 9 at the hole 9'. The holes 9' 9' in the bifurcated end ofbeam permit adjustment at those places. The other extremity of the beamis connected with the forward end of saw-blade At suitable distancesfrom its ends the beam l is slightly flattened vertically to render itmore resistant to buckling vertically when unusual stress is brought tobear upon it.

3 is a regulating-rod which` may be connected in any suitable mannerwith the upper end ot' the saw-handle 9, as at lO. The lower extremityof this rod is ratcheted for a suitable distance on its lower side,having the angles of the teeth inclined when in position toward thesaw-handle.

2 is a clutch having its upper part perforated obliquely from front torear and its lower portion on the rear formed into a ange or offset at7, below which is a hook with curve directed to the rear and slightlyupward, as at 6.

The beam 1 is provided with a hole l5 on its upper surface at a pointslightly below .the midde part of the curve, where it is bent downwardto connect with the saw-blade. The beam l is also represented as curveddownward at its other extremity, where it is bifurcated to connect withthe saw-handle 9.

When it is desired to connect up and adjust the frame for use, theratcheted end of the regulating-rod 3 is passed through the opening 5from rear to front of the clutch 2 and the hook 6 of the latterintroduced into the hole 15 in the upper curved surface of the beam l.When suitable pressure is brought vupon the end 10 of the rod 3 and thatportion of the beam l which lies below the hole 15, the teeth in thelower side of the regulatingrod, as at 4 4, are caused to engage withthe lower front portion of the edge of opening 5. When the pressure isremoved, the elasticity of the beam locks the connection between the rodand beam by drawing the rod back until the iiange 7 of the clutchengages with the rear upper edge (in the beam l) of the opening l5, andthe rod being drawn into close contact with the beam l at a pointtangential to the curve, where beam is bent toward the blade, a tightconnection with three bearingpoints is furnis-hed to overcome thevarious strains brought to bear thereon.

The slight concavity in the horizontal portion of beam, together withthe iiattening, produces suficient rigidity without interfering with theelasticity of frame between the connections with handle and saw-blade,respect-ively.

What l claim as my invention, and desire to secure by Letters Patent,is-

1. In a bucksaw-frame, the perforated and hooked clutch 2, iucombination with the notched rod 3, the iiattened tubular beam lprovided with the perforation l5 and adjustable bifurcated end withholes 9 9", the handle 9 and saw-blade 14, provided with suitableconnections substantially as described.

2. In a bucksaw-frame, the perforated and hooked clutch 2, incombination with the notched rod 3, the beam l having concav-ity rooupward in its longer limb and depressed end vided with the perforation15, with suitable to connect with handle, and in the upperporconnections, substantially as described. 1o tion of curve of shorterlimb provided with Signed by me at Waterloo, Iowa, this 27 th theOpening 15, the handle 9 and blade 14, day of November, 1899.

5 having suitable connections, substantially as LOUIS E. EICKELBERG.

described. Witnesses:

8. In a bueksaW-frame, a perforated and M. E. KENNEDY,

hooked clutch 2, notched rod 3 and beam pro- A. I. BREC-KENRIDGE.

